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Re: pointer member constant expression
On Feb 27, 2006, at 11:35 AM, Joe Buck wrote:
On Mon, Feb 27, 2006 at 12:00:42PM -0000, Dave Korn wrote:
It has been illegal to initialise a static class member inside
the class
definition since sometime back in the early 90s. You must provide
a static
instantiation elsewhere and initialise that.
g++ used to allow in-class-definition initializations that the
standard
does not; some of these have either bit-rotted or been removed over
time.
I would be curious to know why the standards committee decided not to
allow pointers to members as initializers inside classes. It seems
like it would always be a constant that could be computed at compile
time -- but maybe I'm missing something. I can, perhaps, understand
why it is not allowed within the class as the class is being defined
(or declared). But, relative to all the other hard things that a C++
compiler has to figure out at compile time, that seems relatively
simple as well.